Low-water and circulation alarm for gasolene-engines.



PATENTED FEB. 14, 1905.

J. SGHOPBAGH. LOW WATER AND CIRCULATION ALARM FOR GASOLENE ENGINES.

APPLICATION FILED AUG. 25, 1904- WITNESSES:

UNITED STATES Patented February 14, 1905.

PATENT OFFICE.

JACOB SCHOPBAOH, OF NE YORK, N. Y.

SPECIFICATION forming part of Letters Patent No. 782,703, dated February 14, 190 5 Application filed August 25. 1904;. Serial No. 222,107.

To (I/ZZ whom it Uta/y concern:

Be it known that I, JAcoB Scnornncn, a citizen of the United States,,and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Low-'ater and Circulation Alarm-for Gasolene-Engines, of which the following is a full, clear, and exact description.

The purpose of the invention is to provide an electric alarm adapted for use in connection with the water-jacket of the cylinders of gasolene and like engines, which alarm will automatically act when the water in the tank is low and when the circulation is impeded.

Another purpose of the invention is to provide a construction of alarm device for the purpose described which will be exceedingly simple and quick and positive in its action in addition to being economic and readily applied.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a section through the cylinder of an engine of the gasolene type, its water jacket and tank, and a side elevation of the circulating connection between the tank and water-jacket and also a side elevation of the applied alarm device. Fig. 2 is a longitudinal vertical section through the alarm device. Fig. 3 is a horizontal section through the alarm device, and Fig. 4c is a plan view of the device.

It is sought by means of the improved device to give instant warning when the circulation ceases around the cylinder, thereby preventing the possibility of the piston cutting the cylinder, and likewise saving the gases from blowing out, and, further, by such warning the engineer it' within hearing will know when to fill the tank and to examine the pump and its connections.

A represents the cylinder of the engine of the gasolene type, and B the water-jacket for cooling and circulating purposes.

C represents the tank from which the water is forced by the pump D into the said waterjacket B. The pump D is provided with the usual suction-pipe 10, extendinginto the tank, adelivery-pipe 11 leading from the pump into the bottom of the water-jacket.

The body 12 of the alarm device E is tubular and is provided at its bottom portion with an inlet-opening 13, surrounded by a threaded collar 1 1,upon which collar a pipe 15 is screwed, the said pipe being also screwed or otherwise entered into the water-jacket B at its top portion and at the side opposite that where the supply-pipe 11 enters. The body 12 of the device is likewise provided with a side outlet 16, connected with piping 17, leading into the tank C, whereby to complete the circulation of water from the tank through the waterjacket and the device back to the tank.

A horizontal bridge 18 is formed within the body 12 of the alarm device E at the entrance to the delivery-openings 16, as is shown in Figs. 2 and 3, and immediately opposite the bridge 18 a regulating screw 19 is passed through said body into the interior thereof, said regulating screw 19 being adjustable from the exterior of the said body 12, as is also shown in Figs. 2 and 3.

Binding-posts 20 are located at the outside portion of the body 12, the two posts being opposite each other and located, preferably, about centrally between the bridge 18 and the regulating-screw 19. Each binding-post20 is provided with a contact-point 21, usually in the form of a screw, and these contactmints extend into the interior of the body 12 and terminate at their inner ends in enlargements 23, shown in the form of a ball, although the enlargements may be given any desired shape. As is illustrated in Fig. 3, one of the contactpoints is insulated by suitable material 22 surrounding it and extending to the interior ol the body 12 from the exterior; but the other contact-point 21, extending from the opposite binding-post 20, is in direct engagement with the material of which the body 12 of the alarm device is constructed, such material being metal. The enlargements 23 of the contactpoints 21 are in horizontal alinement with each other and are likewise preferably more or less in horizontal alinement with the bridge 18 and the regulating-screw 19.

A hollow ball or sphere 2 1 has movement in the body 12 to and from the bridge 18, the regulating-screw 19, and the enlargements of the contact-points 21, and this ball is held out of such contact or engagement while the water freely circulates through the water-jacket B and through the device; but when such circulation ceases the ball drops and lodges on the enlargements 23 of the contact-points 21, the ball 24 being of metal. The object of the regulating-screw 19 is to be able to so adjust the said screw that it will engage with the ball in such manner as to insure the ball when falling being brought in perfect engagement with both of the contact-points 21, and the bridge 18 in a measure is for the same purpose. In fact, the bridge and the regulatingscrew effectually prevent the ball from rolling off from the contact-points 21. In order that the ball may quickly fall and seat itself on the contact-points mentioned as soon as circulation ceases, an opening 26 is made in a plug 25, which closes the top of the body 12, and in this opening 26 a follower is placed, consisting of a stem 27, having a sliding movement in the said opening, and said stem is provided at its inner end with quite a wide head 27, which engages with the ball. The follower is held in its upper position (shown in Fig. 2) by the force of the water and drops with the ball, insuring the ball making a perfeet contact with the elements 18 and 19. Said follower also acts in a measure as a reliefvalve, since when the ball is down any steam which may have been generated in the body 12 can escape therefrom.

The wires 28 of an electric circuit are connected with the binding-posts 20, with a bat tery 29, and with an electric bell 30, and said bell is usually wired to the delivery-pipe 17, so that when the ball drops and engages with the contact-points 21 the circuit is closed and an alarm is immediately rung and will continue to ring until circulation is again restored.

Having thus described my invention, Iclaim as new and desire to secure by Letters Patent 1. In a low-water and circulating alarm for gasolene-engines, an alarm device consisting of a hollow body having an inlet and an outlet, contact-poi'n ts extending into the body, an electric circuit embodying the contact-points the battery and bell, a ball having movement to and from the contact-points, being carried therefrom by the water passing through the body, means for regulating the posit-ion of the ball on the contact-points, and a follower for the ball.

2. In a low-water and circulating alarm for gasolene-engines, the combination with the water-jacket of the cylinder, a tank and a pump in connection with the two said factors, of an alarm device consisting of a hollow body connected with the water-jacket and the tank, opposing contact-points extending into the body, having enlarged inner ends, a support at one side of the contact-points at the outlet of the body, which support is in horizontal alinement with the contact-points, a ball having movement to and from the contact-points, a regulating-screw entering the body opposite the said support and adapted to direct the ball to the contact-points, a follower for the ball, an electric bell, and a circuit connection between the bell and the contact-points.

3. In a low-water and circulating alarm for gasolene-engines, a hollow body having an inlet and an outlet for water, a follower for the ball, contact-points extending into the body, an electric alarm in circuit connection with the contact-points, and a ball within the body, controlled by the water passing through the body, which ball makes and breaks said circuit.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JACOB SCHOPBACH.

1V itnesses:

J. FRED. Aekice, EvEuAm) BoL'roN Mai-asiiALn. 

